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Registro Completo |
Biblioteca(s): |
Embrapa Pecuária Sudeste. |
Data corrente: |
16/11/2017 |
Data da última atualização: |
23/01/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
KAHWAGE, P. R.; ESTEVES, S. N.; JACINTO, M. A. C.; BARIONI JUNIOR, W.; PEZZOPANE, J. R. M.; PANTOJA, M. H. de A.; BOSI, C.; MIGUEL, M. C. V.; MAHLMEISTER, K.; GARCIA, A. R. |
Afiliação: |
Priscila Reis Kahwage, UFPA; SERGIO NOVITA ESTEVES, CPPSE; MANUEL ANTONIO CHAGAS JACINTO, CPPSE; WALDOMIRO BARIONI JUNIOR, CPPSE; JOSE RICARDO MACEDO PEZZOPANE, CPPSE; Messy Hannear de Andrade Pantoja, UFPA; Cristian Bosi, Bolsista/Embrapa Pecuária Sudeste; Maria Carolina Villani Miguel, UNICEP; Kaue Mahlmeister, Bolsista/Embrapa Pecuária Sudeste; ALEXANDRE ROSSETTO GARCIA, CPPSE. |
Título: |
High systemic and testicular thermolytic efficiency during heat tolerance test reflects better semen quality in rams of tropical breeds. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
International Journal of Biometeorology, v. 61, p. 1819-1829, 2017. |
DOI: |
10.1007/s00484-017-1367-4 |
Idioma: |
Inglês |
Conteúdo: |
This study aimed to assess the capacity of Morada Nova (MN) and Santa Inês (SIN) rams to maintain body and testicular homeothermy under thermal challenge. For 5 days in the summer, 16 males (SIN = 7 and MN = 9) underwent a heat tolerance test, i.e., period 1?animals maintained in the shade (11 to 12 h); period 2?animals exposed to sunlight (12 to 13 h); and period 3?animals returned to the shade (13 to 14 h). The respiratory rate, heart rate, rectal temperature, and infrared surface temperatures (IRT) of the trunk, back, eyeball, and testicles were assessed in each period. The index of capacity of tolerance to insolation (ICTI), which indicates the animals? level of adaptability, was calculated for each animal. Semen quality and testicular parenchyma integrity were assessed before and after the thermal challenge. Statistical analyses were performed at 5% significance. In period 1, the variables had baseline values for both genotypes. In period 2, the variables involved in thermolysis significantly increased (P < 0.05), which matches a thermal discomfort situation. In period 3, the variables returned to baseline values and some values were lower than those in period 1. Semen quality and testicular parenchyma integrity suffered no negative effects with the thermal challenge. IRT ocular and IRT testicular were positively correlated (P < 0.05). It is concluded that MN and SIN rams had efficient thermolytic mechanisms that favor preserving gonadal functionality. The animals were considered resilient to a thermal challenge. In addition, infrared thermography was an efficient tool to verify body and testicular thermoregulation. MenosThis study aimed to assess the capacity of Morada Nova (MN) and Santa Inês (SIN) rams to maintain body and testicular homeothermy under thermal challenge. For 5 days in the summer, 16 males (SIN = 7 and MN = 9) underwent a heat tolerance test, i.e., period 1?animals maintained in the shade (11 to 12 h); period 2?animals exposed to sunlight (12 to 13 h); and period 3?animals returned to the shade (13 to 14 h). The respiratory rate, heart rate, rectal temperature, and infrared surface temperatures (IRT) of the trunk, back, eyeball, and testicles were assessed in each period. The index of capacity of tolerance to insolation (ICTI), which indicates the animals? level of adaptability, was calculated for each animal. Semen quality and testicular parenchyma integrity were assessed before and after the thermal challenge. Statistical analyses were performed at 5% significance. In period 1, the variables had baseline values for both genotypes. In period 2, the variables involved in thermolysis significantly increased (P < 0.05), which matches a thermal discomfort situation. In period 3, the variables returned to baseline values and some values were lower than those in period 1. Semen quality and testicular parenchyma integrity suffered no negative effects with the thermal challenge. IRT ocular and IRT testicular were positively correlated (P < 0.05). It is concluded that MN and SIN rams had efficient thermolytic mechanisms that favor preserving gonadal functionality. The animals were ... Mostrar Tudo |
Palavras-Chave: |
Infrared thermography. |
Thesaurus Nal: |
thermal stress; thermoregulation. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 02546naa a2200277 a 4500 001 2079866 005 2018-01-23 008 2017 bl uuuu u00u1 u #d 024 7 $a10.1007/s00484-017-1367-4$2DOI 100 1 $aKAHWAGE, P. R. 245 $aHigh systemic and testicular thermolytic efficiency during heat tolerance test reflects better semen quality in rams of tropical breeds.$h[electronic resource] 260 $c2017 520 $aThis study aimed to assess the capacity of Morada Nova (MN) and Santa Inês (SIN) rams to maintain body and testicular homeothermy under thermal challenge. For 5 days in the summer, 16 males (SIN = 7 and MN = 9) underwent a heat tolerance test, i.e., period 1?animals maintained in the shade (11 to 12 h); period 2?animals exposed to sunlight (12 to 13 h); and period 3?animals returned to the shade (13 to 14 h). The respiratory rate, heart rate, rectal temperature, and infrared surface temperatures (IRT) of the trunk, back, eyeball, and testicles were assessed in each period. The index of capacity of tolerance to insolation (ICTI), which indicates the animals? level of adaptability, was calculated for each animal. Semen quality and testicular parenchyma integrity were assessed before and after the thermal challenge. Statistical analyses were performed at 5% significance. In period 1, the variables had baseline values for both genotypes. In period 2, the variables involved in thermolysis significantly increased (P < 0.05), which matches a thermal discomfort situation. In period 3, the variables returned to baseline values and some values were lower than those in period 1. Semen quality and testicular parenchyma integrity suffered no negative effects with the thermal challenge. IRT ocular and IRT testicular were positively correlated (P < 0.05). It is concluded that MN and SIN rams had efficient thermolytic mechanisms that favor preserving gonadal functionality. The animals were considered resilient to a thermal challenge. In addition, infrared thermography was an efficient tool to verify body and testicular thermoregulation. 650 $athermal stress 650 $athermoregulation 653 $aInfrared thermography 700 1 $aESTEVES, S. N. 700 1 $aJACINTO, M. A. C. 700 1 $aBARIONI JUNIOR, W. 700 1 $aPEZZOPANE, J. R. M. 700 1 $aPANTOJA, M. H. de A. 700 1 $aBOSI, C. 700 1 $aMIGUEL, M. C. V. 700 1 $aMAHLMEISTER, K. 700 1 $aGARCIA, A. R. 773 $tInternational Journal of Biometeorology$gv. 61, p. 1819-1829, 2017.
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Embrapa Pecuária Sudeste (CPPSE) |
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Registro Completo
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
26/08/1997 |
Data da última atualização: |
02/04/2013 |
Autoria: |
PEREIRA FILHO, I. A.; CRUZ, J. C. |
Afiliação: |
ISRAEL ALEXANDRE PEREIRA FILHO, CNPMS; JOSE CARLOS CRUZ, CNPMS. |
Título: |
Efeitos da rotação de culturas e métodos de preparo de solo na produção de milho e soja. |
Ano de publicação: |
1992 |
Fonte/Imprenta: |
In: EMBRAPA. Centro de Nacional de Pesquisa de Milho e Sorgo. Relatório técnico anual do Centro Nacional de Pesquisa de Milho e Sorgo 1988-1991. Sete Lagoas, 1992. p. 180-181. |
Idioma: |
Português |
Palavras-Chave: |
Maize; Management; Rotacao; Rotation cropping; Soybean. |
Thesagro: |
Glycine Max; Manejo; Milho; Produção; Soja; Solo; Zea Mays. |
Thesaurus NAL: |
soil. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/80255/1/Efeitos-rotacao.pdf
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Marc: |
LEADER 00854naa a2200277 a 4500 001 1475943 005 2013-04-02 008 1992 bl uuuu u00u1 u #d 100 1 $aPEREIRA FILHO, I. A. 245 $aEfeitos da rotação de culturas e métodos de preparo de solo na produção de milho e soja.$h[electronic resource] 260 $c1992 650 $asoil 650 $aGlycine Max 650 $aManejo 650 $aMilho 650 $aProdução 650 $aSoja 650 $aSolo 650 $aZea Mays 653 $aMaize 653 $aManagement 653 $aRotacao 653 $aRotation cropping 653 $aSoybean 700 1 $aCRUZ, J. C. 773 $tIn: EMBRAPA. Centro de Nacional de Pesquisa de Milho e Sorgo. Relatório técnico anual do Centro Nacional de Pesquisa de Milho e Sorgo 1988-1991. Sete Lagoas, 1992. p. 180-181.
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